In S, H,?Three volume settings, P value is, the higher the speed of the jet stream, the higher the efficiency of sandblasting, the rough surface processing the contrary, the relatively smooth surface.是什么意思_In S, H,?Three volume settings, P value is, the higher the speed of the jet stream, the higher the efficiency of sandblasting, the rough surface processing the contrary, the relatively smooth surface.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句